Drill-column



R. P. SAFFULD.

DRILL COLUMN.

Arum/mow: man MMLQQ, 1919.

1,380,255. Paented 'May 31, 1921.

2 SHEETS-SHEET l.

R05/ I? ,Saffo/ld,

R. P. sAFFoLD.

DRILL COLUMN.

APPLICATION FILED MAR. 29,19I9. 1,380,255. Patented May 31,1921.

2 SHEETS-SHEET 2.

Rag Saffold,

1301 wend UNITED sTATEs RAY P. SAFFOLD, OF WARREN, ARIZONA DRILL-COLUMN.

Specication of Letters Patent. I

Patented May 31, 1921.

Application led March 29, 1919. Serial No. 286,075.

To all 'whom t may concern Be it known that I, RAY P. SAFFOLD, a citizen of the United States, residin at Warren, in the county of Cochise and tate 0f Arizona, have invented certain new and useful Improvements in Drill-Columns, of which the following is a specification.

This invention pertains to an improved drill column. It has for its main object the production of a column which may be readily extended and secured in place. A further object resides in the provision of a head block of peculiar formation in which the top of the column will readily find its seat or bearing, the block being so constructed that the parts subject to wear may be readily renewed.

A still further object resides in the provision of means whereby the drill proper may be readily raised upon the column.

With these and other objects in view,

.and which will appear in the vfollowing description, reference is had to the annexed drawings, wherein,-

Figure 1 is a side elevation of the column with a drill in position thereon;

Fig. 2 a similar View looking from the rear;

Fig. 3 a vertical sectional View of the column, the lower or base portion being broken away;

Fig. 4 a sectional elevation of the head block;

Fig. 5 a horizontal sectional view taken on the line V--V of Fig. 3;

'Fi 6 a similar view taken on the line VI- I of Fig. 3;

Fig. 7 a detailed sectional elevation of the upper portion of the column;

Fi 8 a transverse sectional view on the line III- VIII of Fig. 7;

Fig. 9 a perspective view of one of the clamping collar elements;

Fig. 10 a perspective view of the ring employed in conjunction with the extension sustaining member;

Fig. 11 a similar View of the extension sustaining member; and

Fig. 12 a perspective view of the upper portion of the base of the column.

In the drawings, 1 denotes the base of the column, which, as will be seen, is tubular in form and is rovided at its lower end with a block 2 having set screws 3 mounted therein, said screws and block forming a jack for the column. The column is made, in two sections and the upper or extensible portion is denoted by 4.. It is preferably made hollow and is provided upon its outer face with a screw thread 5 of a slow pitch and with a second screw thread 6 of steep pitch and -running in a direction reverse to the other.

fIhe upper end of the basel (see Fig. 12) is cut away and a block 7, having a spline or feather 8 formed thereon and entering the thread 5, is placed in the seat or recess formed by the cut away portion and held in such position by a ring or collar 9 (Fig. 10).. There is thus formed between the extension 4 a thread connection which permits the extension to be rotated and to be raised or lowered as may be desired and necessary. To hold the extension in its proper position with reference to the base I employ a clamp, preferably composed of two yoke-shaped members 10 and 11 (see Figs. 5 and 9), the member 11 being provided with a lug or spline 12 which enters the nick-pitch thread 6. Bolts 13 pass through t e oppositely disposed ends of members 10 and 11 and serve to lock the clamp in place. As will be readily appreciated, the extension may be turned upwardly by rotating the same counter-clockwise and then held in its adjusted or elevated position by releasing the clamp ing elements 10 and 11 and bringing them to the position shown in Figs. 1, 2 and A3,

and tightening up the bolts 13. The feather 8 and spline 12 standing in opposite directions, of course, prevent lany downward movement of the extension into the base. It is conceivable that instead of making the spline or feather 8 upon a separate member as 7, and holding it in place by the ring 9, any other construction which will provide a threaded engagement between the upper end of the column and the telescoping extension 4 may be employed, but the present arrangement forms a simple and cheap construction and one which admits ofa ready replacement of the feathered element should the same become worn or perhaps broken.

The upper end of the extension 4 carries a head 14 which is recessed to receive a ball 15, said ball being held upon its seat by a collar 16 which has a threaded engagement with the head 14. The ball while thus being held in place is free to rotate to acabove noted.

commodate itself to its bearing against a head block which is interposed between the ball and the upper wall of the drift. Said block would preferably be formed as best shown in Fig. 4. It comprises a bearing member 17 having a rounded seat 18 which receives the ball and overlying block 19 and an upper bearing block 20. Said members 17, 19 and 2O will be held together in any suitable manner, as, for instance, by clamps 21 which pass about the end of the various elements. Screws 22 will be employed to hold the members 17 and 19 permanently together. Member 2O which takes against the wall will, of course, in time become worn, and it is for the purose of replacing this block that the members are made separable. This does not necessitate re-orming a seat or socket as 18 each time a new face block 2O is substituted or positioned. The employment of the ball 15 working in the socket 18 and forming the member 17, as shown in Fig. 4, enables the bearing block to be brought to most any position with reference to the head of the column and thereby facilitating the positioning of the column. To assist in such positioning I preferably provide the base 1 with a plurality of openings as 22, 23, (Figs. 1 and 3) into which are projected drills or rods, as indicated in dotted lines in Fig. 2. These rods tend to maintain the column in position while the extension and block are being adjusted to the upper face or wall of the drift. After the extension 4 is turned up as far as possible, the screws 3 are turned down and the column is thus locked in place. The rods or drill steels may then be removed as there is n0 further necessity of their presence, the column being lirmly held in place by the adjustments The employment of the ball 15 and the socket 18 to receive the same will be found advanta eous over the usual pointed end commonly employed in conjunction with a head block, for (the present construction does not wear out the socket or recessv as does the construction just referred to.

To raise and lower the drilling machine upon the column, I emplo a rope rigged to the column and the dril in the manner best shown in Figs 1, 2, 7 and 8. Secured to the up er end of the column, and preferably to t e head 14, is a hook or eye 24 to which is attached a pulley 25. A rope is passedl through the pulley, the bight of the rope, indicated by 26, passing beneath the supportin arm 27. which extends outwardly from the c amp 28 which surrounds the base 1. The arm 27 carries the drilling machine, denoted generally by 29. One end of the rope, as 30, is secured to the chuck end of the machine, while theopposite end of the rope or that denoted by 31 is secured to the lsition indicated in dotted lines.

rear of the machine or secured to arm` 27, as indicated in dotted lines, Fig. 2. The machine may be swung about the arm 27 as a fulcrum. When the parts are in the position shown in full lines in Fig. 1, and the clamp 28 is free, the miner may raise the clamp upwardl along the column by depressing the chuc end of the -machine or bringing it to the position shown in dotted lines in lFig. 1. The chuck end being further removed from the fulcrum 27 than the rear end of the machine there is a tendenc upon the depression of the forward or chuc end of the machine to raise thev clamp 28 and thus carry the machine from the position shown in full lines to the elevated po- After the parts have been brought to the position shown in dotted lines in Fig. 1 the operator will by reversing the feed screw 32 of the drill cause the rear end of the machine to extend beyond the fulcrum farther than the chuck end of the machine and upon depressing the rear end of the machine the clampy 28 will be again raised and this operation may be repeated as many times as is found necessary to bring the drill to lits proper elevation. Instead of manipulating the drilling machine in the manner just specified to cause its elevation, the operator may by turning on the power of the drill cause the drill to' be rotated and thus wind the end 30 about the rotatable member of the drill thereby eii'ecting raising of the drilling machine. Ordinaril it takes two men, at least, to raise the drilling machine upwardly along the column, but with the arrangements just described the machine may be raised by one man with the expenditure of but little energy. 4

What is claimed is: 1. A drill column comprising two telescoping members, one of said members' having a threaded connection with the other, the externally threaded member having a second reverse thread; and a stop collar having a spline adapted to enter said reversely formed thread and to bear against the adjacent end of the other member.

`2. A drill column comprising a hollow base; an upper member telesco ing said. base, said member being providey with reversely formed threads thereon; a spline on the base taking into one of the threads; and a stop collar taking into the other thread, said collar resting on the upper end of the base when the parts are brought to their iinal adjustment.

3. A drill column comprising a hollow base; an upper member telesco ing said base, said member being provide with reversely formed threads thereon; a spline on base when the parts are brought to their tinal adjustment; and a jack located at the .lower end of the base.

4. A drill column comprising a hollow base; an upper member telescoping said base, said member being provided with reversely formed threads of different pitch; a feathered member secured to the column and coperating with the thread of least pitch; and a stop collar having a spline entering the quick pitch thread, said collar surrounding the threaded member and adapted when the parts are brought to their adjusted position to bear upon the upper end of the base.

5. A drill column comprising a hollow base having a recess formed in the upper end thereof; a member seated in said recess; a feather extending inwardly therefrom; means for securing said member in lace; a threaded extension telescoping saidp base, the feather aforesaid entering the thread; and means for holding said baseand extension against relative movement when they are brought to their desired adjusted relation.

6.,In a drill column, the combination of a base, an extension member carried thereby; a ball rotatably mounted on the upper end of said member; and a separate bearingtblock having a socket in which the ball sea s.

7. In a drill column, the combination of a base; an extension member carried thereby; a ball rotatably mounted on the upper end of said member; a bearing block havlng a socket in which said ball seats, said block being unattached to the ball; and a removable bearing plate carried by said block.

8. In combination witha drill column; a freely revoluble ball carried by the upper end thereof; and a bearing plate having a socket formed therein for the reception of the ball, the plate being disconnected from vported upon the column;

the ball being cut away to one side of the socket so that the block may be tipped and adjusted with reference to the column.

9. In combination with a drill column; a ball carried by the upper end thereof and free to rotate with reference thereto; a bearing block adapted -to receive the ball, said block being formed of a series of separable elements; and clamping means adapted to hold said elements together.

l0. In combination with a drill column; a drilling machine; a supporting bar for said machine, said bar belng slidably supa pulley block attached t0 the upper portion of the column; and a rope or cable having its ends secured to the opposite ends of the drilling machine, said rope passing through the block and having a bight or loop passing downwardly and embracing the supporting bar.

11. In combination with a drill column; a drillin machine; a supporting bar therefor sliding y supported on said column; means for shifting said machine longitudinally with reference to the axis of the bar; a pulley block attached to the upper end of the column; and a rope or cable having its ends connected to the opposite ends of the dr1lling machine and likewise having a bight which passes downwardly and embraces the supporting bar.

12. In combination with a drill column; a ball rotatably mounted on one end thereof; an independent removable bea'rlng block having a socket in which the ball seats and means fon holding the column 1n posltlon and with the ball seated in the socket, whereby the block will be forced against the wall of the drift in which the column 1 s located.

In testimony whereof I have slgned my name to this specification.

RAY P. SAFFOLD.A 

